             (-> paths
                 (.style "stroke" (fn [srow] (:stroke srow)))
                 (.style "stroke-width" "1.5px")
-                (.style "fill" (fn [srow] (:stroke srow)))
-                (.style "fill-opacity" "0.25")
+                (as-> paths
+                    (if fill?
+                      (-> paths
+                          (.style "fill" (fn [srow] (:stroke srow)))
+                          (.style "fill-opacity" "0.25"))
+                      paths))
                 (.datum (fn [{:keys [y-value-fn filter-fn] :as srow}]
                           (let [data (->> data
                                           (reduce

                                 left
                                 rigth
                                 bottom
                                 on-brushend-fn
                                 domain-y-min
                                 domain-y-max
                                 y-label
                                 title
                                 description
                                 on-selected-fn
                                 ]
                          :or   {main-width  d3c/full-screen-width
                                 main-height 300
                                 top         15
                                 left        60
                                 rigth       15
                                 bottom      20
                                 y-label     ""}

                          :as opts}]
  (let [chart-width  (- main-width left rigth)

                                     (for [s   yx-schema
                                           row interval]
                                       (assoc s :row row)))
                             ]                         


                         ;; CIRCLES ----------------------------------------------------------------
